How many of the following compounds aqueous solutions are acidic in nature `Cao,SO_(2),SO_(3),Fe_(2)O_(3),Cl_(2)O_(7),CO_(2),Na_(2)O`

How many total number of compounds are only acidic in aqueous medium - NA_(2)O, Cl_(2)O_(7), B_(2)O_(2), Al_(2)O_(3), ZnO, Cs_(2)O, BaO, SO_(3)

How many of the following compounds will decolourize the colour of acidified KMnO_(4) ? {:(H_(2)S,FeSO_(4),NaNO_(2)),(Na_(2)SO_(3),PbS,Na_(2)S),(NaNO_(3),Na_(2)SO_(4),CO_(2)),(SO_(3),P_(2)O_(5),):}

Na_(2)CO_(3), " " Fe_(2)(SO_(4))_(3), " " FeSO_(4).7H_(2)O

From the following choose the basic oxides and acidic oxides : CaO, SO_(2),Na_(2)O and CO_(2)

Find the number of oxide(s) which are more acidic than SO_(3) . SO_(2),Cl_(2)O_(7),P_(2)O_(5),CaO,Al_(2)O_(3)

How many molecules are acidic oxides among the following : CO, NO_(2), SO_(2), SO_(3), NO, N_(2)O, SiO_(2), Cl_(2)O_(7)